42 
YALONIACEiE. 
found described below under the name Blodgettia , because it is not quite certain 
whether it be properly a member of this series ; or possibly the type of a separate 
family. 
The fructification of none of these plants is satisfactorily known. 
All are natives of tropical and sub-tropical latitudes. The Penicilli or Merman's 
Shaving Brushes are characteristic of coral reefs, and are found in the Caribbean Sea, 
and on the shores of Australia and of the Indian archipelago. Anadyomene is common 
to the Mediterranean Sea, the Gulf of Mexico and the shores of Brazil. Dictyosphceria 
is tropical and Australian. Valonia is found in most western oceans, and ought to 
occur on the Floridan Keys, though not yet found there. Microdictyon is generally a 
deep water production, lying at the bottom in 5-10 fathoms ; but it sometimes occurs 
at low water mark. Species of it, all very similar to each other, have been found in the 
tropics of both hemispheres and in the Mediterranean ; and one is very abundant in 
Port Jackson, Australia. Struvea is confined to the West coast of Australia, and 
Apjohnia to the Southern coast. Chamaedoris is Caribbean ; and Acrocladus , Naeg., a 
closely allied form, is found in the Mediterranean. 
TABLE OF THE NORTH AMERICAN GENERA. 
* Dendroid ; stipitate , crowned with tufted filaments. 
I. Chamaedoris. Stipes monosiphonous, annulated ; head very dense. 
II. Penicillus. Stipes formed of innumerable interwoven filaments, spongy ; head 
brush-like. 
** Confervoid ; densely tufted. 
III. Blodgettia. Frond filamentous, articulated, branching, densely tufted. 
*** Membranous , leaf -like. 
IY. Anadyomene. Membrane erect, flabellately veined ; veins articulated, confervoid, 
radiating from the base toward the margin. 
Y. DiCTYOSPHiERiA. Membrane amorphous, wholly formed of spherical cells lying in a 
single stratum. 
I. CHAMiEDOKIS, Mont. 
Root much branched. Frond stipitate, dendroid. Stipes at first clavate, then 
cylindrical ; tubular, unicellular, horny-membranous, annularly constricted and corru- 
gated, at length crowned with a dense fascicle of confervoid, much branched, articulate 
ramelli. Fruit unknown. 
